BE476381A - - Google Patents

Info

Publication number
BE476381A
BE476381A BE476381DA BE476381A BE 476381 A BE476381 A BE 476381A BE 476381D A BE476381D A BE 476381DA BE 476381 A BE476381 A BE 476381A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE476381A publication Critical patent/BE476381A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H01J2893/0023—Manufacture carbonising and other surface treatments
BE476381D 1946-09-06 BE476381A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2683246A GB616487A (en) 1946-09-06 1946-09-06 Improvements in or relating to electron emission filaments

Publications (1)

Publication Number Publication Date
BE476381A true BE476381A (ja)

Family

ID=10249973

Family Applications (1)

Application Number Title Priority Date Filing Date
BE476381D BE476381A (ja) 1946-09-06

Country Status (4)

Country Link
BE (1) BE476381A (ja)
ES (1) ES179643A1 (ja)
FR (1) FR952894A (ja)
GB (1) GB616487A (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2838020B2 (de) * 1978-08-31 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Direkt geheizte Kathode für eine Elektronenröhre mit koaxialem Elektrodenaufbau und Verfahren zu ihrer Herstellung
US4424044A (en) * 1982-04-23 1984-01-03 Raytheon Company Method of fabricating cathode electrodes

Also Published As

Publication number Publication date
FR952894A (fr) 1949-11-25
ES179643A1 (es) 1947-10-16
GB616487A (en) 1949-01-21

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